The Navis float has a traditional layout, with the sensor head at the top, and the buoyancy bladders at the bottom. The Navis buoyancy engine uses a positive displacement piston pump to transfer silicon oil from internal to external reservoirs to increase the float volume and cause it to rise.

A Navis autonomous profiling float with integrated optical Dissolved Oxygen sensor (SBE 63) and bolt-on WET Labs ECO Triplet is now available from Sea-Bird Scientific. The sensors take continuous measurements at 1 Hz through ascent, and provide high accuracy, resolution, and stability.

A Navis autonomous profiling float with integrated optical Dissolved Oxygen sensor (SBE 63) and WET Labs MCOMS is now available from Sea-Bird Scientific. The sensors take continuous measurements at 1 Hz through ascent, and provide high accuracy, resolution, and stability.

The SeapHOx combines the Satlantic SeaFET pH sensor with the Sea-Bird Electronics SBE 37-SMP-ODO MicroCAT CTD+DO sensor. The SeapHOx allows for the integrated data collection of pH with the critical oceanographic and biological measurement of temperature, salinity, and oxygen. The integrated package also allows the SeaFETTM to take advantage of the SBE 37's pumped flow path and anti-fouling technology, extending deployment durations in some cases.

The pump module is a compact unit consisting of a centrifugal pump head and a long-life, brushless, DC, ball-bearing motor. The pump impeller and electric drive motor are coupled magnetically through the housing, providing high reliability by eliminating moving seals.

The pump module is a compact unit consisting of a centrifugal pump head and a long-life, brushless, DC, ball-bearing motor. The pump impeller and electric drive motor are coupled magnetically through the housing, providing high reliability by eliminating moving seals.

The SBE 7 Microstructure Conductivity Sensor is a reliable, lightweight instrument intended for use in marine profiling applications where its high speed and spatial resolving power offer the ability to characterize small scale ocean conductivity features.

The SBE 8 Microstructure Temperature Sensor is a reliable, lightweight instrument intended for use in marine profiling applications where its high speed and spatial resolving power offer the ability to characterize small scale ocean temperature features.

The standard SBE 9plus underwater unit has an aluminum housing rated to 6800 meters (22,300 ft), and is supplied with one conductivity and one temperature sensor (fitted with a TC Duct and constant-flow pump), and an internally mounted, temperature-compensated Paroscientific Digiquartz pressure sensor for 6800 meter (10,000 psia) full scale range.

The SBE 27 pH and O.R.P. (Redox) sensor combines a pressure balanced glass-electrode, Ag/AgCl reference probe and platinum O.R.P. electrode to provide in-situ measurements up to 1200 meters (3,900 ft) deep. The replaceable pH probe is permanently sealed and is supplied with a soaker bottle attachment to prevent the reference electrode from drying out during storage.

The SBE 29 pressure sensor, used on our SBE 25 Sealogger CTD (no longer in production as of 2012), is a modular sensor consisting of a mechanical strain-gauge pressure transducer with thermistor temperature compensation.

SBE 32 Carousel Water Sampler - An innovative design, free of the reliability problems associated with motor-driven types. The Carousel has no moving-shaft seals that can bind up at low temperatures or under pressure because each bottle position has its own magnetically-activated lanyard release latch. Only the magnetic field -- not a moving part -- links the Carousel's lanyard release mechanism with the pylon control electronics.

The rack-mountable SBE 33 provides power and real-time data acquisition and control for an SBE 32 Carousel Water Sampler that has the SBE 33 interface option installed in its pylon. The SBE 33 is compatible with all Carousel sizes -- full size, compact, and sub-compact. When powered and controlled by the SBE 33, the Carousel can be used:

The SBE 35 is a laboratory standards thermometer with the unique ability to be used both in fixed point cells and at depths up to 6800 meters (22,300 ft). It is unaffected by shock and vibration encountered in shipboard and industrial environments, making it ideal for use in calibration laboratories in the range of -5 to +35° C, and in the thermodynamic method of measuring hydro turbine efficiency. The SBE 35 communicates via a standard RS-232 interface at 300 baud, 8 data bits, no parity.

The SBE 36 Deck Unit provides surface power and real-time data acquisition and control for an SBE 19, 19plus, 19plus V2, 25, 25plus, or 49 CTD, or SBE 50 Pressure Sensor, interfacing with a Power and Data Interface Module (PDIM).

Sophisticated A/D acquisition electronics, ultra-stable thermistor, and state-of-the-art calibration provide the standards-level performance of an expensive AC bridge and platinum thermometer at a small fraction of the cost.

The SBE 43 sets the oxygen measurement standard for oceanographic research. The sensor is a complete redesign of the Clark polarographic membrane type in which careful choices of materials, geometry, and sensor chemistry are combined with superior electronics interfacing and calibration methodology to yield major gains in performance.

The SBE 52-MP is a Conductivity, Temperature, Depth (pressure) sensor, designed for moored profiling applications in which measurements are made from from a device that travels vertically beneath a buoy, or from a buoyant package that is winched up and down from a bottom-mounted platform.

Reliable detection of deep ocean tsunami waves without generating false alarms requires a sensor that accurately detects pressure changes of millimeter scale while sampling rapidly enough to characterize the shape of the tsunami waves and reflections in real-time. In addition to having extremely high resolution, the acquisition circuitry must be low power and free of noise, drift, and temperature-induced changes. The pressure sensor must be extremely reliable, stable, and capable of generating high resolution outputs.

The ECO is the ideal small-boat water sampler for coastal, estuarine, and large lake ecological monitoring. The ECO is light and economical and can be integrated with an SBE 19, 19plus, 19plus V2, 25, 25plus, or 49* CTD. It is available in a three-bottle or six-bottle configuration with 4-liter ECO sample bottles, uniquely designed for the ECO.

The SBE 56's pressure-protected thermistor has a 0.5 second time constant, providing excellent accuracy (initial accuracy 0.002 °C) and resolution when fast sampling at 2 Hz (0.5 sec). It has exceptional stability; drift is typically less than 0.002 °C per year. The SBE 56 delivers unprecedented accuracy and stability at a price you would expect to pay for similar recorders that are less accurate.

Due to increasing science demands, Sea-Bird developed an individually calibrated, high-accuracy, optical oxygen sensor to assist in critical hypoxia and ocean stoichiometric oxygen chemistry research. With this new sensor, a myriad of moored and float-based platforms can contribute significantly in these driving areas of importance.